Receptacles – Sectional – Container formed of only two similar sections
Reexamination Certificate
1999-12-13
2001-02-27
Castellano, Stephen (Department: 3727)
Receptacles
Sectional
Container formed of only two similar sections
C220S786000, C220S327000
Reexamination Certificate
active
06193089
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a case locking arrangement, and more particularly, to a case with an easy structure, a convenient assembly and an excellent connection strength.
2. Description of the Prior Art
The locking engagement for conventional casings generally includes a base and a cover, at whose rims an inner projection and a grooved hole are respectively provided. By means that the inner projection is engaged into the grooved hole, the base and the cover can be connected to each other. However, the connection between the base and the cover is completely dependent on the engagement of the projection into the grooved hole. In order to strengthen the connection, it's necessary to demand the respective strength of the base and the cover while the contact surface between them is also required to take into account. Consequently, in order to solve the assembly problem and inconvenience in enhancing the projection part to increase the contact surface with the grooved hole, it's important to obtain a solution for the balance between the assembly convenience and the connection strength.
In addition, the conventional grooved hole is arranged on the projected grooved seat at the rim of the base of the cover. However, the grooved seat has no arrangement to increase the strength so that it will be easily destroyed after a long period use (or due to abnormal external force).
SUMMARY OF THE INVENTION
It is a main object of the present invention to provide an improvement for the case locking arrangement, in which two half casings contain an engaging projection with an arched face and an engaging seat with strengthening ribs at the corresponding position, wherein an easy engagement and positioning of the engaging projection into the engaging seat can be easily achieved by means of the guidance of the arched face while strengthening ribs are used to enhance the strength of the engaging seat in order to form a locking arrangement with easy assembly and stable connection.
It is another object of the present invention to provide an improvement for the case locking arrangement, in which tow half casings contain a connecting seat and a locating post at the corresponding position of the other side thereof, so that a stable connection of the two half casings can be achieved by means that the locating post is connected to the connecting seat and both are screwed together, and wherein the use of the screw can be less frequently due to a direct stable connection of the locating post to the connecting seat.
It is a further object of the present invention to provide an improvement for the case locking arrangement, in which the connecting seat and the locating post completely cover the screw so that the exposition thereof can be prevented to effectively reduce the interference of the electromagnetic waves and therefore the electrical operation inside of the two half casings can be more stabilized.
REFERENCES:
patent: 2930834 (1960-03-01), Hose
patent: 4089464 (1978-05-01), Teti, Jr. et al.
patent: 4466585 (1984-08-01), Maehara
patent: 4614282 (1986-09-01), Faul
patent: 4632269 (1986-12-01), Rose
patent: 4995513 (1991-02-01), Rosler
patent: 5562223 (1996-10-01), Kuroda
patent: 5913650 (1999-06-01), Daoud
patent: 6006941 (1999-12-01), Hitchings
Bacon & Thomas PLLC
Castellano Stephen
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